ShareBased Employee Compensation (Details 1) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
ShareBased Employee Compensation (Details)
Outstanding stock options	676,500	489,000
Vested stock options	361,600	185,800
Nonvested stock options	314,900	303,200
Exercised stock option	0
Issued stock options	202,500
Forfeited stock option	5,000
Expired stock options	10,000
Outstanding wgt. avg. exercise price	$ 3.68	$ 3.96
Vested wgt. avg. exercise price	3.80	4.15
Nonvested wgt. avg. exercise price	3.53	$ 3.84
Issued wgt. avg. exercise price	3.08
Exercised wgt. avg. exercise price	0
Forfeited wgt. avg. exercise price	5.10
Expired wgt. avg. exercise price	$ 4.55
Outstanding contractual life, Beginning	7 years 3 months 29 days	7 years 2 months 23 days
Nonvested contractual life, Begining	8 years 1 month 6 days	8 years 2 months 12 days
Vested contractual life, Begining	6 years 7 months 28 days	5 years 7 months 24 days
Outstanding contractual life, Ending	7 years 3 months 29 days	7 years 3 months 29 days
Outstanding grant date fair value	$ 1.51	$ 1.51
Vested grant date fair value	1.55	1.55
Nonvested grant date fair value	1.49	$ 1.49
Issued grant date fair value	1.16
Exercised grant date fair value	0
Forfeited grant date fair value	1.37
Expired grant date fair value	1.06
Outstanding grant date fair value	1.41
Vested grant date fair value	1.44
Nonvested grant date fair value	$ 1.39
Outstanding aggregate intrinsic value	$ 24,000,000
Vested aggregate intrinsic value	24,000,000
Nonvested aggregate intrinsic value	0
Issued aggregate intrinsic value	0
Forfeited aggregate intrinsic value	0
Exercised aggregate intrinsic value	0
Outstanding aggregate intrinsic value	4,500,000
Vested aggregate intrinsic value	4,500,000
Nonvested aggregate intrinsic value	$ 0